模拟雨 [英] Simulating rain

问题描述

我正在用java制作游戏，我想创建一个倾盆大雨的模拟。在下雨的时候，云应该向右移动。移动云是没有问题的。这是我正在努力的下雨。

I am making a game in java and I want to create a simulation of a cloud that is pouring rain. The cloud is supposed to move to the right while raining. Moving the cloud is no problem. It's the rain that I am struggling with.

我想做的是使用计时器绘制一个矩形，这应该看起来像是在云中的随机x值下雨。然后每100毫秒将下降的y值加1。但我不想为每次雨滴创建100个不同的矩形，x变量和y变量。

What I was thinking of doing was with a timer to draw a rectangle, thats supposed to look like falling rain at a random x value inside of the cloud. And then add 1 to the y value of the drop each 100 millisecond. But I don't want to create 100 different rectangles, x variables and y variables for each rain drop.

我知道如何才能做到这一点？建议赞赏！

Any idea how I can accomplish this? Suggestions appreciated!

这是一场2D游戏..抱歉。

It is a 2d game.. Sorry.

推荐答案

我建议只将值存储为对象的ArrayList。

I would recommend just storing the values as an ArrayList of objects.

class Raindrop {
    private int x;
    private int y;

    public void fall() {
        y--;
    }
}

然后创建一个具有泛型类型的ArrayList。

Then make an ArrayList with a generic type.

ArrayList<Raindrop> drops = new ArrayList<Raindrop>();

为了降低每一次跌幅，

for (int i=0; i<drops.length(); i++) {
    drops.get(i).fall();
}

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